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1.
Medicine (Baltimore) ; 99(12): e19525, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32195955

RESUMO

BACKGROUND: To assess the arterial oxygen partial pressure (PaO2) at defined time points during preoxygenation and to compare high-flow heated humidified nasal oxygenation with standard preoxygenation using oxygen insufflation via a facemask for at least 5 minutes, before intubation during induction of general anesthesia. METHODS: This randomized, single-blinded, prospective study will be conducted in patients undergoing head and neck surgery. After standard monitoring, the artery catheter at the radial artery or dorsalis pedis artery will be placed and arterial blood gas analysis (ABGA) for baseline values will be performed simultaneously. Each group will be subjected to 1 of 2 preoxygenation methods (high-flow nasal cannula or simple facemask) for 5 minutes, and ABGA will be performed twice. After confirming intubation, we will start mechanical ventilation and check the vital signs and perform the final ABGA. DISCUSSION: This trial aims to examine the trajectory of PaO2 levels during the whole preoxygenation procedure and after intubation. We hypothesize that preoxygenation with the high-flow nasal cannula will be superior to that with the face mask. STUDY REGISTRATION: This trial was registered with the Clinical Trial Registry (NCT03896906; ClinicalTrials.gov).


Assuntos
Anestesia Geral/tendências , Monitorização Transcutânea dos Gases Sanguíneos/métodos , Cabeça/cirurgia , Oxigenação Hiperbárica/tendências , Pescoço/cirurgia , Gasometria , Cânula/normas , Cânula/estatística & dados numéricos , Humanos , Intubação Intratraqueal/métodos , Máscaras/normas , Máscaras/estatística & dados numéricos , Ventilação não Invasiva/instrumentação , Ventilação não Invasiva/métodos , Oxigênio/sangue , Estudos Prospectivos , Artéria Radial/cirurgia , Respiração Artificial/instrumentação , Respiração Artificial/métodos , Dispositivos de Acesso Vascular/normas
2.
Medicine (Baltimore) ; 98(52): e18406, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31876713

RESUMO

As an anesthetic reversal agent, there are concerns with cholinesterase inhibitors regarding worsening of Parkinson's disease (PD)-related symptoms. Sugammadex, a relatively new reversal agent, does not inhibit acetylcholinesterase and does not require co-administration of an antimuscarinic agent. The present study compared the recovery profiles of 2 agents initially administered for reversal of neuromuscular blockade in patients with advanced PD who underwent deep brain stimulator implantation.A total of 121 patients with PD who underwent deep brain stimulator implantation were retrospectively analyzed. Patients were divided into 1 of 2 groups according to the type of neuromuscular blockade reversal agent (pyridostigmine vs sugammadex) initially administered. Recovery profiles reflecting time to extubation, reversal failure at first attempt, and hemodynamic stability, including incidence of hypertension or tachycardia during the emergence period, were compared.Time to extubation in the sugammadex group was significantly shorter (P < .001). In the sugammadex group, reversal failure at first attempt did not occur in any patient, while it occurred in seven (9.7%) patients in the pyridostigmine group (P = .064), necessitating an additional dose of pyridostigmine (n = 3) or sugammadex (n = 4). The incidence of hemodynamic instability during anesthetic emergence was significantly lower in the sugammadex group than in the pyridostigmine group (P = .019).Sugammadex yielded a recovery profile superior to that of pyridostigmine during the anesthesia emergence period in advanced PD patients. Sugammadex is also likely to be associated with fewer adverse effects than traditional reversal agents, which in turn would also improve overall postoperative management in this patient population.


Assuntos
Inibidores da Colinesterase/uso terapêutico , Estimulação Encefálica Profunda , Eletrodos Implantados , Bloqueio Neuromuscular/métodos , Doença de Parkinson/terapia , Implantação de Prótese , Brometo de Piridostigmina/uso terapêutico , Sugammadex/uso terapêutico , Período de Recuperação da Anestesia , Estimulação Encefálica Profunda/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Bloqueio Neuromuscular/efeitos adversos , Implantação de Prótese/métodos , Estudos Retrospectivos
3.
Aging (Albany NY) ; 11(20): 9060-9074, 2019 10 18.
Artigo em Inglês | MEDLINE | ID: mdl-31627189

RESUMO

Although serum aminotransferase levels are frequently measured for preoperative evaluation, their prognostic value to postoperative outcomes remain unclear. This study aimed to investigate the relationship between preoperative serum aminotransferase levels and postoperative 90-day mortality in patients undergoing cardiovascular surgery. We included adult patients (n=6264) who underwent cardiovascular surgery between January 2010 and December 2016 at a tertiary academic hospital. Preoperative serum alanine aminotransferase (ALT), serum aspartate aminotransferase (AST), and De Ritis ratio (defined as AST/ALT) were categorized into three groups: low (≤20th percentile), middle (20th-80th percentile), and high (>80th percentile). Of the 6264 patients enrolled (40.4% women; median age, 62 years), 183 (2.9%) died within 90 days postoperatively. Multivariable-adjusted analyses revealed low ALT (hazard ratio 1.58, 95% confidence interval, 1.14-2.18) and high De Ritis ratio (hazard ratio 1.59, 95% confidence interval, 1.15-2.20) were independent predictors of postoperative mortality, but AST did not have a statistically significant association. The association of low ALT and high De Ritis ratio with 90-day mortality was more pronounced in patients older than 60 years (P-values for interaction <0.05). Therefore, preoperative serum aminotransferase levels may be a valuable prognostic marker in patients with cardiovascular surgery, particularly in the elderly.

4.
Medicine (Baltimore) ; 98(18): e15358, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-31045778

RESUMO

Success of surgical free flap transfer depends on achieving and maintaining adequate perfusion across the microvascular anastomosis. The purpose of this prospective study was to determine the optimal infusion rate of dobutamine to augment duplex ultrasound measured blood flow to the tissue flap during surgery.Twenty-one patients undergoing general anesthesia for lower limb reconstructive surgery were recruited. The optimal dobutamine dose was evaluated using the modified Dixon's up-and-down method, starting at 6 µg·kg·min, and then titrated in increments of 1 µg·kg·min.The optimal dose of dobutamine for improving blood flow to the tissue flap was 3.50 ±â€Š0.57 µg·kg·min in 50% of patients. The 95% effective dose of dobutamine calculated by probit analysis was 4.46 µg·kg·min (95% confidence interval: 3.99-7.00 µg·kg·min).The results of our study suggest that a dobutamine infusion rate less than 5 µg·kg·minprovides significant improvement of blood flow to the tissue flap, while minimizing cardiovascular side effects.


Assuntos
Agonistas de Receptores Adrenérgicos beta 1/administração & dosagem , Dobutamina/administração & dosagem , Retalhos de Tecido Biológico/irrigação sanguínea , Hemodinâmica/efeitos dos fármacos , Procedimentos Cirúrgicos Reconstrutivos/métodos , Agonistas de Receptores Adrenérgicos beta 1/efeitos adversos , Adulto , Anestesia Geral , Dobutamina/efeitos adversos , Relação Dose-Resposta a Droga , Feminino , Humanos , Infusões Intravenosas , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Ultrassonografia Doppler Dupla , Adulto Jovem
5.
BMC Surg ; 19(1): 15, 2019 Feb 04.
Artigo em Inglês | MEDLINE | ID: mdl-30717728

RESUMO

BACKGROUND: To improve prognosis after esophageal surgery, intraoperative fluid optimization is important. Herein, we hypothesized that hydroxyethyl starch administration during esophagectomy reduce the total amount of fluid infused and it could have a positive effect on postoperative complication occurrence and mortality. METHODS: All consecutive adult patients who underwent elective esophageal surgery for cancer were studied. The primary outcome was the development of composite complications including death, cardio-cerebrovascular complications, respiratory complications, renal complications, gastrointestinal complications, sepsis, empyema or abscess, and multi-organ failure. The relationship between perioperative variables and composite complication was evaluated using multivariable logistic regression. RESULTS: Of 892 patients analyzed, composite complications developed in 271 (30.4%). The higher hydroxyethyl starch ratio in total fluid had a negative relationship with the total fluid infusion amount (r = - 0.256, P <  0.001). In multivariable analysis, intraoperatively administered total fluid per weight per hour (odds ratio, 1.248; 95% CI, 1.153-1.351; P <  0.001) and HES-to-crystalloid ratio (odds ratio, 2.125; 95% CI, 1.521-2.969; P <  0.001) were associated with increased risks of postoperative composite outcomes. CONCLUSIONS: Although hydroxyethyl starch administration reduces the total fluid infusion amount during esophageal surgery for cancer, intravenous hydroxyethyl starch infusion is associated with an increasing risk of postoperative composite complications.


Assuntos
Neoplasias Esofágicas/cirurgia , Esofagectomia , Hidratação/efeitos adversos , Hidratação/métodos , Derivados de Hidroxietil Amido/efeitos adversos , Substitutos do Plasma/efeitos adversos , Idoso , Soluções Cristaloides/administração & dosagem , Soluções Cristaloides/efeitos adversos , Esofagectomia/efeitos adversos , Esofagectomia/mortalidade , Feminino , Humanos , Derivados de Hidroxietil Amido/administração & dosagem , Período Intraoperatório , Masculino , Pessoa de Meia-Idade , Morbidade , Substitutos do Plasma/administração & dosagem , Prognóstico , Estudos Retrospectivos
6.
BMC Anesthesiol ; 18(1): 135, 2018 09 27.
Artigo em Inglês | MEDLINE | ID: mdl-30261839

RESUMO

BACKGROUND: The analgesic effects of dexamethasone have been reported previously, and the present study determined the effects of preoperative dexamethasone on postoperative pain in patients who received thoracotomy. METHODS: Forty patients participated in this randomized, double-blind study. All patients received either dexamethasone via a 0.1 mg/kg intravenous bolus before anesthetic induction or an equal volume of saline. Postoperative analgesia was provided to both groups via epidural patient-controlled analgesia (PCA), which consisted of 250 µg of sufentanil in 250 mL of ropivacaine (0.18%) for 72 h. The primary outcome was the cumulative consumption of epidural PCA at postoperative 24 and 72 h. The secondary outcomes were the pain intensity scores during resting and coughing at postoperative 24 and 72 h, quality of recovery, total amount of rescue analgesics required, and length of hospital stay. RESULTS: No significant differences was observed in the consumption of epidural PCA between the control and dexamethasone infusion groups at 24 h (63.6 [55.9-72.7] vs. 68.5 [60.2-89.0] ml, P = 0.281) and 72 h (199.4 [172.4-225.1] vs. 194.7 [169.1-252.2] ml, P = 0.890). Moreover, there was no significant difference in the pain intensity scores during resting and coughing at postoperative 24 and 72 h, quality of recovery, total amount of rescue analgesics required, and length of hospital stay. CONCLUSION: A single intravenous administration of dexamethasone during the preoperative period does not reduce opioid consumption and post-thoracotomy pain. TRIAL REGISTRATION: The study was registered at http://cris.nih.go.kr ( KCT0000359 ) and was conducted from December 2011 to October 2012.


Assuntos
Analgesia Controlada pelo Paciente/tendências , Anti-Inflamatórios/administração & dosagem , Dexametasona/administração & dosagem , Dor Pós-Operatória/prevenção & controle , Cuidados Pré-Operatórios/métodos , Toracotomia/tendências , Idoso , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor Pós-Operatória/diagnóstico , Dor Pós-Operatória/etiologia , Estudos Prospectivos , Toracotomia/efeitos adversos
7.
J Dent Anesth Pain Med ; 18(3): 189-193, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29984324

RESUMO

A 57-year-old woman scheduled for cochlear implant removal exhibited preoperative electrocardiographic findings of early repolarization (ER). Four episodes of transient ST segment elevations during surgery raised suspicion for vasospastic angina (VA). In the post-anesthetic care unit, the patient complained of chest discomfort and received sublingual nitroglycerin with uncertain effect. The patient refused to proceed with postoperative invasive coronary angiography, resulting in inconclusive diagnosis. Intraoperative circumstances limit the diagnosis of VA, which emphasizes the need for further testing to confirm the diagnosis. When VA is suspected in patients with underlying ER, it is reasonable to consider invasive examination to establish the diagnosis and prevent recurrence of VA. If ST changes are observed during surgery in patients with preoperative ER, careful monitoring is recommended. Due to general anesthesia, the absence of patient symptoms limits the definitive diagnosis of those with suspected VA. Therefore, additional postoperative surveillance is recommended.

8.
Pediatr Transplant ; : e13237, 2018 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-29908011

RESUMO

Structural alterations in the cirrhotic heart may contribute to electromechanical abnormalities, represented by QT prolongation. The aim of this study was to investigate the changes in QTc according to the operative stage during pediatric LT and to identify which baseline echocardiographic parameters were associated with intraoperative QTc prolongation. Data were evaluated from 39 children undergoing LT for chronic liver disease (median age 9 months). In 19 patients (48.7%), baseline QTc was prolonged ≥440 ms (462 ± 19 ms). Through the period of post-reperfusion, QTI, QTc, and JTI progressively increased, although values partially recovered toward the end of surgery. High LVMI (≥82.51 g/m2 ) was associated with baseline QTc ≥ 440 ms (OR = 1.034, P = .032). In the 5 minutes post-reperfusion stage, marked QTc prolongation (defined as QTc ≥ 500 ms; n = 24, 61.5%) was significantly associated with high EDVI (OR = 1.060, P = .027) and SVI (OR = 1.075, P = .026). In children with chronic liver disease, increased ventricular volumes and mass may increase the risk of QTc prolongation during LT, suggesting that repolarization abnormalities might be contributed by structural changes characteristic of cirrhotic cardiomyopathy.

9.
J Dent Anesth Pain Med ; 18(2): 111-114, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29744386

RESUMO

We report a case of pulmonary aspiration during induction of general anesthesia in a patient who was status post esophagectomy. Sudden, unexpected aspiration occurred even though the patient had fasted adequately (over 13 hours) and received rapid sequence anesthesia induction. Since during esophagectomy, the lower esophageal sphincter is excised, stomach vagal innervation is lost, and the stomach is flaccid, draining only by gravity, the patient becomes vulnerable to aspiration. As the incidence of perioperative pulmonary aspiration is relatively low, precautions to prevent aspiration tend to be overlooked. We present a video clip showing pulmonary aspiration and discuss the literature concerning the risk of aspiration and its preventive strategies.

10.
Pacing Clin Electrophysiol ; 41(6): 656-660, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29626346

RESUMO

AIMS: Avoiding propofol in patients with Brugada syndrome has been suggested because of the theoretical risk of provoking ventricular arrhythmias, although propofol may be selected for conscious sedation during electrophysiological procedures in catheterization laboratories. This study aimed to document periprocedural electrocardiographic changes and adverse events in patients with Brugada syndrome undergoing implantable cardioverter defibrillator (ICD) implantation using propofol sedation. METHODS: We reviewed the clinical data of 53 consecutive patients who underwent ICD implantation during 1998-2011. Sedation was achieved by combining propofol with either midazolam or fentanyl, and a bolus propofol dose (0.5-1 mg/kg) was administered to induce deep sedation. Periprocedural events, including arrhythmias, defibrillations, and hyperthermia episodes, were evaluated, and electrocardiogram (ECG) variables were measured. The need for emergency anesthetic support/intubation and incidence of perioperative complications or mortality were analyzed. RESULTS: Procedure time and cumulative propofol dose for each patient was 125.2 (42.8) min and 204.6 (212.7) mg, respectively. During deep sedation, blood pressure, heart rate, and oxygen saturation were significantly decreased (P < 0.001) such that eight (15.1%) patients required manual ventilation and one (1.9%) needed atropine injection. No significant ECG changes were observed. Only two (3.7%) patients showed newly developed ST elevation in the anterior precordial lead, whereas three (5.6%) had isolated premature ventricular contractions. CONCLUSION: ICD implantation without significant ECG changes or adverse outcomes is feasible under propofol sedation in patients with Brugada syndrome. However, because of significant hemodynamic changes and respiratory compromise, close monitoring and meticulous propofol dose titration is warranted.


Assuntos
Síndrome de Brugada/terapia , Sedação Consciente/métodos , Desfibriladores Implantáveis , Hipnóticos e Sedativos/administração & dosagem , Propofol/administração & dosagem , Adjuvantes Anestésicos/administração & dosagem , Adulto , Feminino , Fentanila/administração & dosagem , Humanos , Masculino , Midazolam/administração & dosagem , Monitorização Fisiológica , Resultado do Tratamento
11.
J Cardiothorac Vasc Anesth ; 32(3): 1236-1242, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29128489

RESUMO

OBJECTIVE: To evaluate the prognostic impacts of postoperative increases in serum amino transaminases on 1-year mortality in patients who underwent coronary artery bypass graft. DESIGN: A retrospective analysis. SETTING: A tertiary care university hospital. PARTICIPANTS: A total of 1,950 patients who underwent coronary artery bypass graft. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Aspartate amino transaminase and alanine amino transaminase ratios were calculated as the ratio between the peak aspartate amino transaminase and alanine amino transaminase within the first 5 post-operative days and their respective upper limit of normal values. A ratio of 2.0 was seen to be the minimum for which a difference in 1-year mortality could be detected in univariate analysis, when considering simultaneously both aspartate amino transaminase and alanine amino transaminase ratios. Multivariable analysis showed an association between an aspartate amino transaminase ratio > 2.0 and increased 1-year mortality (hazard ratio [HR] 2.68, 95% confidence interval [CI] 1.42-5.05, P = 0.002), and also between both an aspartate amino transaminase and alanine amino transaminase ratio > 2.0 and increased 1-year mortality (HR 3.90, 95% CI 1.87-8.14, P < 0.001). However, increases in alanine amino transaminase only above the upper limit of normal were not associated with increased 1-year mortality. CONCLUSIONS: Postoperative increases in aspartate amino transaminase only and increases in both aspartate amino transaminase and alanine amino transaminase greater than twice the upper limit of normal were associated with increased 1-year mortality in patients undergoing coronary artery bypass graft.


Assuntos
Alanina Transaminase/metabolismo , Aspartato Aminotransferases/metabolismo , Ponte de Artéria Coronária/mortalidade , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos
12.
Sci Rep ; 7(1): 14020, 2017 10 25.
Artigo em Inglês | MEDLINE | ID: mdl-29070852

RESUMO

Given that surgical stress response and surgical excision may increase the likelihood of post-surgery cancer dissemination and metastasis, the appropriate choice of surgical anesthetics may be important for oncologic outcomes. We evaluated the association of anesthetics used for general anesthesia with overall survival and recurrence-free survival in patients who underwent esophageal cancer surgery. Adult patients (922) underwent elective esophageal cancer surgery were included. The patients were divided into two groups according to the anesthetics administered during surgery: volatile anesthesia (VA) or intravenous anesthesia with propofol (TIVA). Propensity score and Cox regression analyses were performed. There were 191 patients in the VA group and 731 in the TIVA group. In the entire cohort, VA was independently associated with worse overall survival (HR 1.58; 95% CI 1.24-2.01; P < 0.001) and recurrence-free survival (HR 1.42; 95% CI 1.12-1.79; P = 0.003) after multivariable analysis adjustment. Similarly, in the propensity score matched cohorts, VA was associated with worse overall survival (HR 1.45; 95% CI 1.11-1.89; P = 0.006) and recurrence-free survival (HR 1.44; 95% CI 1.11-1.87; P = 0.006). TIVA during esophageal cancer surgery was associated with better postoperative survival rates compared with volatile anesthesia.


Assuntos
Anestesia/métodos , Anestésicos/efeitos adversos , Neoplasias Esofágicas/cirurgia , Administração Intravenosa , Idoso , Anestésicos/administração & dosagem , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Análise de Sobrevida , Resultado do Tratamento
13.
Medicine (Baltimore) ; 96(22): e7045, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28562562

RESUMO

During liver transplantation, the thermodilution cardiac output (CO) technique cannot respond to sudden hemodynamic changes associated with postreperfusion syndrome. Photoplethysmography (PPG) can reflect changes in intravascular volume and thus can be used to assess vasomotor tone and arterial stiffness on the pressure-volume relation. We investigated whether a beat-to-beat analysis of the arterial pressure-PPG relationship can estimate dynamic changes in vascular characteristics immediately after liver graft reperfusion.In 10 recipients, arterial blood pressure and PPG waveforms recorded simultaneously were analyzed from the beginning of fall to nadir in systolic blood pressure immediately after reperfusion. On a beat-to-beat basis, we compared the ratio of the amplitude of PPG to arterial pulse pressure (PPGamp/PP, as relative vascular compliance) to total peripheral resistance (TPR) and Windkessel compliance (Cwk) obtained from the Modelflow CO algorithm.Following graft reperfusion, PPGamp/PP and Cwk increased (median 41.5%; P = .005 and 42.0%; P < .001, respectively), whereas TPR decreased (median -46.4%; P < .001). Beat-to-beat PPGamp/PP was negatively correlated with TPR (median r = -0.80 [95% CI -0.85 to -0.76] on linear regression and r = 0.84 [95% CI 0.73-0.92] on curvilinear regression), and was positively correlated with Cwk (median r = 0.86 [95% CI 0.81-0.91] on linear regression and r = 0.88 [95% CI 0.75-0.96] on curvilinear regression).Our results suggest that relative compliance, obtained from beat-to-beat analysis of PPG and arterial pressure waveforms, can track abrupt changes in vascular characteristics associated with postreperfusion syndrome. This simple index would contribute to differential diagnoses of sudden hypotension.


Assuntos
Pressão Sanguínea , Transplante de Fígado , Fotopletismografia , Traumatismo por Reperfusão/diagnóstico , Traumatismo por Reperfusão/fisiopatologia , Resistência Vascular , Adulto , Diagnóstico Diferencial , Feminino , Humanos , Hipotensão/diagnóstico , Hipotensão/etiologia , Hipotensão/fisiopatologia , Fígado/cirurgia , Masculino , Pessoa de Meia-Idade , Monitorização Fisiológica , Estudos Prospectivos , Sistema de Registros , Análise de Regressão , Estudos Retrospectivos
14.
PLoS One ; 12(1): e0170369, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28107408

RESUMO

BACKGROUND: Positive end-expiratory pressure (PEEP) can increase intracranial pressure. Pneumoperitoneum and the Trendelenburg position are associated with an increased intracranial pressure. We investigated whether PEEP ventilation could additionally influence the sonographic optic nerve sheath diameter as a surrogate for intracranial pressure during pneumoperitoneum combined with the Trendelenburg position in patients undergoing robot-assisted laparoscopic prostatectomy. METHODS: After anesthetic induction, 38 patients were randomly allocated to a low tidal volume ventilation (8 ml/kg) without PEEP group (zero end-expiratory pressure [ZEEP] group, n = 19) or low tidal volume ventilation with 8 cmH2O PEEP group (PEEP group, n = 19). The sonographic optic nerve sheath diameter was measured prior to skin incision, 5 min and 30 min after pneumoperitoneum and the Trendelenburg position, and at the end of surgery. The study endpoint was the difference in the sonographic optic nerve sheath diameter 5 min after pneumoperitoneum and the Trendelenburg position between the ZEEP and PEEP groups. RESULTS: Optic nerve sheath diameters 5 min after pneumoperitoneum and the Trendelenburg position did not significantly differ between the groups [least square mean (95% confidence interval); 4.8 (4.6-4.9) mm vs 4.8 (4.7-5.0) mm, P = 0.618]. Optic nerve sheath diameters 30 min after pneumoperitoneum and the Trendelenburg position also did not differ between the groups [least square mean (95% confidence interval); 4.5 (4.3-4.6) mm vs 4.5 (4.4-4.6) mm, P = 0.733]. CONCLUSIONS: An 8 cmH2O PEEP application under low tidal volume ventilation does not induce an increase in the optic nerve sheath diameter during pneumoperitoneum combined with the steep Trendelenburg position, suggesting that there might be no detrimental effects of PEEP on the intracranial pressure during robot-assisted laparoscopic prostatectomy. TRIAL REGISTRATION: ClinicalTrial.gov NCT02516566.


Assuntos
Pressão Intracraniana , Nervo Óptico/anatomia & histologia , Respiração com Pressão Positiva , Prostatectomia/métodos , Robótica , Decúbito Inclinado com Rebaixamento da Cabeça , Humanos , Laparoscopia , Masculino , Volume de Ventilação Pulmonar
15.
Anesthesiology ; 124(5): 1001-11, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26891150

RESUMO

BACKGROUND: Hypoalbuminemia may increase the risk of acute kidney injury (AKI). The authors investigated whether the immediate preoperative administration of 20% albumin solution affects the incidence of AKI after off-pump coronary artery bypass surgery. METHODS: In this prospective, single-center, randomized, parallel-arm double-blind trial, 220 patients with preoperative serum albumin levels less than 4.0 g/dl were administered 100, 200, or 300 ml of 20% human albumin according to the preoperative serum albumin level (3.5 to 3.9, 3.0 to 3.4, or less than 3.0 g/dl, respectively) or with an equal volume of saline before surgery. The primary outcome measure was AKI incidence after surgery. Postoperative AKI was defined by maximal AKI Network criteria based on creatinine changes. RESULTS: Patient characteristics and perioperative data except urine output during surgery were similar between the two groups studied, the albumin group and the control group. Urine output (median [interquartile range]) during surgery was higher in the albumin group (550 ml [315 to 980]) than in the control group (370 ml [230 to 670]; P = 0.006). The incidence of postoperative AKI in the albumin group was lower than that in the control group (14 [13.7%] vs. 26 [25.7%]; P = 0.048). There were no significant between-group differences in severe AKI, including renal replacement therapy, 30-day mortality, and other clinical outcomes. There were no significant adverse events. CONCLUSION: Administration of 20% exogenous albumin immediately before surgery increases urine output during surgery and reduces the risk of AKI after off-pump coronary artery bypass surgery in patients with a preoperative serum albumin level of less than 4.0 g/dl.


Assuntos
Lesão Renal Aguda/epidemiologia , Lesão Renal Aguda/prevenção & controle , Albuminas/uso terapêutico , Ponte de Artéria Coronária sem Circulação Extracorpórea/efeitos adversos , Hipoalbuminemia/prevenção & controle , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/prevenção & controle , Albumina Sérica/análise , Lesão Renal Aguda/mortalidade , Idoso , Ponte de Artéria Coronária sem Circulação Extracorpórea/mortalidade , Método Duplo-Cego , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Monitorização Intraoperatória , Complicações Pós-Operatórias/mortalidade , Estudos Prospectivos , Terapia de Substituição Renal , Resultado do Tratamento , Urodinâmica
16.
PLoS One ; 10(11): e0142125, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26529592

RESUMO

BACKGROUND: The FloTrac/Vigileo™ system does not thoroughly reflect variable arterial tones, due to a lack of external calibration. The ability of this system to measure stroke volume and track its changes after fluid administration has not been fully evaluated in patients with the high systemic vascular resistance that can develop during laparoscopic surgery. METHODS: In 42 patients undergoing laparoscopic prostatectomy, the stroke volume derived by the third-generation FloTrac/Vigileo™ system (SV-Vigileo), the stroke volume measured using transesophageal echocardiography (SV-TEE) as a reference method, and total systemic vascular resistance were evaluated before and after 500 ml fluid administration during pneumoperitoneum combined with the Trendelenburg position. RESULTS: Total systemic vascular resistance was 2159.4 ± 523.5 dyn·s/cm5 before fluid administration. The SV-Vigileo was significantly higher than the SV-TEE both before (68.8 ± 15.9 vs. 57.0 ± 11.0 ml, P < 0.001) and after (73.0 ± 14.8 vs. 64.9 ± 12.2 ml, P = 0.003) fluid administration. During pneumoperitoneum combined with the Trendelenburg position, Bland-Altman analysis for repeated measures showed a 53.8% of percentage error between the SV-Vigileo and the SV-TEE. Four-quadrant plot (69.2% of a concordance rate) and polar plot analysis (20.6° of a mean polar angle, 16.4° of the SD of a polar angle, and ±51.5° of a radial sector containing 95% of the data points) did not indicate a good trending ability of the FloTrac/Vigileo™ system. CONCLUSIONS: The third-generation FloTrac/Vigileo™ system may not be useful in patients undergoing laparoscopic surgery, based on unreliable performance in measuring the stroke volume and in tracking changes in the stroke volume after fluid administration during pneumoperitoneum combined with the Trendelenburg position.


Assuntos
Laparoscopia/métodos , Pneumoperitônio , Resistência Vascular , Cirurgia Vídeoassistida/métodos , Idoso , Ecocardiografia Transesofagiana , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pneumoperitônio/diagnóstico por imagem , Pneumoperitônio/fisiopatologia , Pneumoperitônio/cirurgia
17.
J Cardiothorac Vasc Anesth ; 28(6): 1440-7, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25245579

RESUMO

OBJECTIVE: Recent studies suggested that elevated serum uric acid levels may be associated with the risk of acute kidney injury (AKI) in several settings. However, the effect of uric acid on the risk of AKI after cardiovascular surgery remains uncertain. DESIGN: A retrospective analysis. SETTING: A tertiary care university hospital. PARTICIPANTS: All consecutive adult patients (n = 1,019) who underwent cardiovascular surgery between January 2011 and May 2012. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Preoperative and perioperative data were assessed in the study population. AKI was defined and staged as serum creatinine concentration-based Acute Kidney Injury Network criteria. Univariate and multivariate logistic regression analyses were conducted to evaluate the association between preoperative uric acid and postoperative AKI. Preoperative elevated uric acid (≥ 6.5 mg/dL) was associated independently with AKI after cardiovascular surgery (odds ratio 1.46; 95% confidence interval 1.04-2.06, p = 0.030). Results were the same in subgroup analyses. Preoperative elevated uric acid (≥ 6.5 mg/dL) also was associated with a higher incidence of prolonged ICU and hospital stay. CONCLUSIONS: Preoperative elevated serum uric acid is an independent risk factor for AKI in patients undergoing cardiovascular surgery. This finding suggests that preoperative measurements of serum uric acid concentration may help stratify risks for AKI in these patients.


Assuntos
Lesão Renal Aguda/sangue , Procedimentos Cirúrgicos Cardiovasculares , Complicações Pós-Operatórias/sangue , Período Pré-Operatório , Ácido Úrico/sangue , Idoso , Feminino , Humanos , Tempo de Internação/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Valor Preditivo dos Testes , Estudos Retrospectivos , Fatores de Risco
18.
Korean J Anesthesiol ; 66(4): 322-6, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24851171

RESUMO

The survival rate after lung transplantation has increased in recent years, leading to an increase in non-pulmonary conditions that require surgical intervention. These post-transplant surgical procedures, however, are associated with high mortality and morbidity rates. Intra-abdominal conditions are the most common reasons for surgical intervention. We describe here two patients who underwent abdominal surgery under general anesthesia following lung transplantation. One patient underwent cholecystectomy due to cholecystitis after heart-lung transplantation, and the other patient had an exploratory laparotomy for duodenal ulcer perforation after double lung transplantation. Depending on the type of transplant intervention, the physiology of the transplanted lung must be considered for general anesthesia. Knowledge of underlying conditions and immunosuppressive therapy following transplantation are important for safe and effective general anesthesia.

19.
J Cardiothorac Vasc Anesth ; 28(3): 564-71, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24702816

RESUMO

OBJECTIVE: To evaluate the usefulness of renal regional oxygen saturation (renal rSO2) in predicting the risk of acute kidney injury (AKI) after cardiac surgery. DESIGN: A prospective observational study. SETTING: Tertiary care university hospital. PARTICIPANTS: One hundred patients undergoing cardiac surgery. INTERVENTIONS: Renal rSO2 was monitored continuously by near-infrared spectroscopy (NIRS) throughout the anesthetic period. MEASUREMENTS AND MAIN RESULTS: Postoperative AKI was defined using the Risk, Injury, Failure, Loss, and End-stage (RIFLE) criteria. Of 95 patients who were included in the final analysis, 34 patients developed AKI after surgery. Recorded renal rSO2 data were used to calculate the total duration of the time when renal rSO2 was below the threshold values of 70%, 65%, 60%, 55%, and 50%. The total periods when the renal rSO2 level was below each of the threshold values were significantly longer in patients with AKI than in those without AKI (p = 0.001 or p<0.001). Receiver operating characteristic (ROC) curve analysis was used to evaluate the predictive power of renal rSO2 for AKI. The ROC curve analysis showed that renal rSO2 could predict the risk of AKI with statistical significance and that a renal rSO2<55% had the best performance (area under the curve-ROC, 0.777; 95% CI, 0.669-0.885; p<0.001). Multivariate logistic regression analysis revealed that AKI significantly correlated with the duration of renal rSO2<55% (p = 0.002) and logistic EuroSCORE (p = 0.007). CONCLUSIONS: Intraoperative renal regional oxygen desaturation can be a good predictor of AKI in adult patients undergoing cardiac surgery.


Assuntos
Lesão Renal Aguda/epidemiologia , Lesão Renal Aguda/etiologia , Procedimentos Cirúrgicos Cardíacos/métodos , Hipóxia/complicações , Complicações Intraoperatórias/etiologia , Rim/metabolismo , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Idoso , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Ponte de Artéria Coronária , Feminino , Taxa de Filtração Glomerular , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Espectroscopia de Luz Próxima ao Infravermelho , Resultado do Tratamento
20.
J Int Med Res ; 42(3): 684-92, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24691459

RESUMO

OBJECTIVE: The efficacy and side-effects of nefopam were prospectively compared with those of fentanyl for patient-controlled analgesia (PCA) following cardiac surgery. METHODS: Patients scheduled to undergo cardiac surgery were randomly assigned between three PCA groups (nefopam, fentanyl or nefopam + fentanyl). Pain was assessed at rest and during movement at 12, 24, 36, 48 and 72 h after surgery using a visual analogue scale (VAS). Total infused PCA volume, number of rescue drug injections, duration of intubation and length of stay in the intensive care unit were recorded. The incidence of adverse effects was noted at 48 h postoperatively. RESULTS: There were no significant between-group differences in VAS score, total PCA infusion volume or number of rescue injections (n = 92 per group). Nausea was significantly more common in the fentanyl group compared with both other groups. CONCLUSIONS: PCA with nefopam alone provides suitable postoperative analgesia after cardiac surgery.


Assuntos
Analgésicos não Entorpecentes/administração & dosagem , Analgésicos Opioides/administração & dosagem , Procedimentos Cirúrgicos Cardíacos , Fentanila/administração & dosagem , Nefopam/administração & dosagem , Dor Pós-Operatória/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Analgesia Controlada pelo Paciente/métodos , Analgésicos não Entorpecentes/efeitos adversos , Analgésicos Opioides/efeitos adversos , Método Duplo-Cego , Feminino , Fentanila/efeitos adversos , Humanos , Unidades de Terapia Intensiva , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Náusea/etiologia , Náusea/fisiopatologia , Nefopam/efeitos adversos , Medição da Dor , Dor Pós-Operatória/fisiopatologia , Estudos Prospectivos
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